Retro-style gym interior, mid-century modern architecture, open spaces, high ceilings, natural wood accents, geometric patterns, bold color schemes, vintage fitness equipment, wooden flooring, mirrored walls, minimalist lighting, functional layout, ample ventilation, abundant natural light, large windows, sliding glass doors, lush greenery, outdoor views, warm atmosphere, soft diffused lighting, shallow depth of field, 1/1 composition, realistic textures, ambient occlusion.